fluencelabs/kademlia-exporter
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src/exporter: Record whether node lookup failed or not

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This commit is contained in:
Max Inden 2020-04-15 21:59:33 +02:00
parent 5f75e3b222
commit a0a0f7e15f
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GPG Key ID: 5403C5464810BC26
1 changed files with 14 additions and 13 deletions
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27
src/exporter.rs
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@ -12,7 +12,7 @@ use log::info;
use maxminddb::{geoip2, Reader};
use node_store::{Node, NodeStore};
use prometheus::{
exponential_buckets, CounterVec, HistogramOpts, HistogramTimer, HistogramVec, Opts, Registry,
exponential_buckets, CounterVec, HistogramOpts, HistogramVec, Opts, Registry,
};
use std::{
collections::HashMap,
@ -20,7 +20,7 @@ use std::{
net::IpAddr,
pin::Pin,
task::{Context, Poll},
time::Duration,
time::{Duration, Instant},
};
mod client;
@ -37,7 +37,7 @@ pub(crate) struct Exporter {
///
/// When a lookup returns the entry is dropped and thus the duratation is
/// observed through `<HistogramTimer as Drop>::drop`.
in_flight_lookups: HashMap<PeerId, HistogramTimer>,
in_flight_lookups: HashMap<PeerId, Instant>,
tick: Delay,
metrics: Metrics,
/// An exporter periodically reconnects to each discovered node to probe
@ -150,12 +150,18 @@ impl Exporter {
.with_label_values(&[&name, "kad", "get_closest_peers"])
.inc();
// Record lookup latency.
let result_label = if res.is_ok() { "ok" } else { "error" };
let peer_id = PeerId::from_bytes(match res {
Ok(GetClosestPeersOk { key, .. }) => key,
Err(err) => err.into_key(),
})
.unwrap();
self.in_flight_lookups.remove(&peer_id);
let duration = Instant::now() - self.in_flight_lookups.remove(&peer_id).unwrap();
self.metrics
.random_node_lookup_duration
.with_label_values(&[&name, result_label])
.observe(duration.as_secs_f64());
}
KademliaEvent::GetProvidersResult(_) => {
self.metrics
@ -296,15 +302,10 @@ impl Future for Exporter {
}
// Trigger a random lookup for each client.
for (name, client) in &mut this.clients {
for (_, client) in &mut this.clients {
let random_peer = PeerId::random();
let timer = this
.metrics
.random_node_lookup_duration
.with_label_values(&[&name])
.start_timer();
client.get_closest_peers(random_peer.clone());
this.in_flight_lookups.insert(random_peer, timer);
this.in_flight_lookups.insert(random_peer, Instant::now());
}
}
@ -349,10 +350,10 @@ impl Metrics {
let random_node_lookup_duration = HistogramVec::new(
HistogramOpts::new(
"random_node_lookup_duration",
"Duration of random node lookups.",
"Duration of random node lookup.",
)
.buckets(exponential_buckets(0.1, 2.0, 10).unwrap()),
&["dht"],
&["dht", "result"],
)
.unwrap();
registry